Is 36v4 compatible with 3.3 v logic?

I’m using the 36v4 to control a stepper motor. The controlling MCU is an STM32 Nucleo board, which runs with 3.3 V logic. Is the 36v4 compatible with the Nucleo board? If so, should the IORef pin still be connected to the 5V Out line as shown here. Or should this be connected to a 3.3 V output from the Nucleo board?

Hello, Bryan.

Yes, the High-Power Stepper Motor Driver 36v4 is compatible with 3.3V logic. Instead of connecting the V5 (out) pin to IOREF, you would supply 3.3V to IOREF, as shown in the “General typical wiring diagram” heading of the High-Power Stepper Motor Driver 36v4 product page: